User`s guide

534 VEE User’s Guide
Appendix
Generating an Array: Use randomize(ramp(100,0,1), 0, 1) in the
Formula object to create an array of 100 random numbers. The
ramp() function generates an ordered array and delivers it to
the randomize() function, which then generates random values
between 0 and 1.
Time Stamp: The now() function is used in the expression field
of the I/O Transaction dialog box for transaction one in the To
File object. When you change the format to TIME STAMP
FORMAT, the dialog box displays additional buttons to specify
how the time will be stored.
Storing Two Values in a Line: In both the third and fourth
transactions in the To File object, a constant Text string is stored,
followed by a Real value. For example, in the third transaction
you type "Mean: ",B in the expression field of the I/O
Transacti on box (assuming the mean value will be on the B input
pin).
Extracting a Value From a File: To get to the mean and standard
deviation, first send an EXECUTE REWIND to position the read
pointer at the beginning. Then use NULL with the proper
format to READ past the time stamp and real array. (This will
throw away the values read instead of putting them in an output
terminal.) Finally, read the last two lines in the file as strings.
Junction: Use the Flow ⇒ Junction object to connect more than
one output to a single input, such as connecting the mean and
sdev outputs to the Logging AlphaNumeric display.